Datasheet for AD8450ASTZ-RL:
- Manufacturer Part Number : AD8450ASTZ-RL
- Manufacturer : AD
- Description : Precision Analog Front End and Controller for Battery Test/Formation Systems IC
- Series : AD8450
- Reference Price : USD 5.56
- Our Price : We have a better price, contact us by email
- Product Type : Battery Management
- Function : Industrial Battery Manufacturing
- Current Suggest : Recommended for New Designs
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 80-Lead LQFP (14mm x 14mm)
- Pins : 80
- MFG Package Case : ST-80-2
- Part Type : REEL
- Standard Packing Type : Reel
- Standard Packing Quantity : 1000
- Working Temperature : -40 to 85C
- Other Part Number : AD8450ASTZ-RL
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- Integrated constant current and voltage modes with automatic switchover
- Charge and Discharge modes
- Precision voltage and current measurement
- Integrated precision control feedback blocks
- Precision interface to PWM or linear power converters
- Programmable gain settings
- Current sense gains:
26, 66, 133, 200 - Voltage sense gains:
0.2, 0.27, 0.4, 0.8
- Programmable OVP, OCP fault detection
- Current sharing & balancing
- Excellent ac & dc performance
- See datasheet for additional features
The AD8450 is a precision analog front end for testing andmonitoring battery cells. Referring to figure one, a precisionprogrammable gain instrumentation amplifier (PGIA)measures the battery’s charge/discharge current and aprogrammable gain difference amplifier (PGDA) measures thebattery’s voltage. Internal laser trimmed resistor networks setthe gains for the PGIA and the PGDA, optimizing the AD8450’sperformance over the rated temperature range. PGIA gains are26×, 66×, 133×, and 200×. PGDA gains are 0.2×, 0.27×,0.4×,and 0.8×.
Voltages at the ISET and VSET inputs set the desired constantvoltage (CV) and constant current (CC) values. CC to CVswitching is automatic and transparent to the system.
A TTL level logic input, MODE, selects between charge anddischarge modes (high for charge, low for discharge). An analogoutput, VCTRL, interfaces directly with ADI’s ADP1972 &ADP1974 PWM controllers.
The AD8450 includes resistor programmable overvoltage andovercurrent detection and current sharing circuitry. Currentsharing is used to balance charge among multiple batteries.The AD8450 simplifies designs by providing excellent accuracy,performance over temperature, flexibility with functionality,and overall reliability in a space-saving package. The AD8450 isavailable in an 80 lead 14 mm ×14 mm × 1 mm LQFP packageand is rated at −40 °C to +85 °C operating temperature.
APPLICATIONS
- Battery cell testing & formation
- Battery module testing
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
